Study of bromination of poly-1,1,2-trichlorobuta-1,3-diene

Poly(1,1,2-TrichlorobutadJene-1,3) and its Compositions: Part I—Synthesis, Structure and Reactivity

“…45 We can change the ratio of the 1,4-and 3,4-structures in the PTCB molecules by carrying out the polymerization of TCB in the following ways: by a radical mechanism in the presence of some redox initiators (about 30% of 3,4-structure units); by the combined action of the shear deformation and high pressure (about 40% of 3,4-structure units); by the solid-phase polymerization under y-radiation when the process proceeds by an ionic mechanism with the formation of the 3,4-structures predominantly. An increase in the content of the 3,4-structures in the polymer is accompanied by the increasing values of glass-transition point and thermal stability.…”